军团菌效应剂SidC/SdcA在多个小GTPase和SNARE蛋白质中无处不在,以促进体成熟
Kelong Ma1, Rundong Shu1, Hongtao Liu1
1State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, College of Veterinary Medicine, Jilin University, Center for Pathogen Biology and Infectious Diseases, The First Hospital of Jilin University, Changchun, China.
Cellular and molecular life sciences : CMLS
|June 5, 2024
概括
流感性肺炎病毒 (Legionella pneumophila) 是一种流感性肺炎病毒.
科学领域:
- 微生物学 微生物学
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 蛋白质ubiquitination是一个关键的翻译后修饰调节细胞过程.
- 菌利用效应蛋白来操纵宿主无处不在的信号传递.
- SidC/SdcA是E3泛素连接酶,对于将ER衍生的囊泡招募到含有军团菌的真空细胞 (LCV) 至关重要.
研究的目的:
- 为了识别莱吉欧内拉肺炎SidC/SdcA效应体的无处不在的目标.
- 阐明SidC/SdcA劫持囊泡贩运途径的机制.
- 了解SidC/SdcA如何促进LCV成熟.
主要方法:
- 使用生物化学测试识别无处不在的基质.
- 对参与囊泡贩运的蛋白质-蛋白质相互作用的分析.
- 调查Rab7与LCV膜相关联的泛化作用.
主要成果:
- 发现SidC/SdcA可以使Rab小GTPases和SNARE蛋白质无处不在.
- 通过SidC/SdcA对合成素3和4的乌比基化促进了ER衍生的囊泡与胞体的融合.
- 拉布7的SidC/SdcA介导的全域化对于其LCV膜关联至关重要,并且损害了RILP结合.
结论:
- SidC/SdcA直接在囊泡贩运机器的关键组件中无处不在.
- 这种无处不在促进了ER衍生的囊泡融合和LCV成熟.
- 这项研究揭示了宿主-病原体相互作用的新机制,涉及效应因子介导的无处不在.
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